After careful calculation, the explosives were fixed. These things are simple but difficult to say. A castle like this that can withstand nuclear explosions has very high requirements for the location of the explosion. As for the amount of explosives, it goes without saying and can be imagined. The explosives If it¡¯s too much, it will cause a chain reaction; if it¡¯s too little, it won¡¯t work at all. Finally, all the demolition experts stepped back, and now they were just waiting for Wang Hao¡¯s order. "Boom!" "Boom" Wang Hao didn't wait for anything and directly gave the blasting order. First there was a series of small explosions, followed by a huge explosion that resounded through the night sky. This time the blasting plan was developed by a group of experts. It took a long time to study. In order to allow large-scale loading equipment to enter the vault, a large enough door must be blasted. Such blasting is very difficult. First, they have no data on the thickness of the wall. It all relies on estimation and prediction. If too much explosives are used, it is very likely that the entire castle will be destroyed or collapse. The only way is to use drilling holes to fix a range, use a small amount of explosives to blow up a loose space, and then Use a large amount of explosives to blast open the loose space, then the scope of the damage will be under control. The amount of explosives was very large, and the violent shock wave stirred up smoke and dust in the air. The smoke filled the air, and the huge sound spread far away. Some nearby residents were so frightened by the violent sound of artillery and gunfire that they hid in their homes and did not dare to come out. The explosions outside were beyond control. Many people thought that the Third World War had broken out and hurriedly hid in their cellars. among. After the smoke and dust cleared, a huge one appeared. The black hole was exposed in front of everyone, and the several legion commanders did not act rashly. They first arranged for a few skilled masters to check it with life detection equipment before allowing the blasting experts to enter. Indeed, there are many traps here, but under that round of indiscriminate bombing, most of the traps lost their effect. After another inspection by the electrical engineer, some remaining dangers were also eliminated. Unfortunately, when they entered the cave, they did not see mountains of gold bricks, but a wall made of dark steel. ?Obviously. It was only the outer wall that was blown up at first. The real line of defense was this steel wall. There was a tall gate on the wall, which was very tightly connected. If it weren't for a seam, it wouldn't be a door at all. "Dong dong" A demolition expert approached the dark wall and knocked on it with the instrument in his hand. His face suddenly changed color. "How is it?" Wang Hao felt the violent heartbeats of several blasting experts. "This is composite armor. If my guess is correct, this should be poor armor." A demolition expert stroked the dark wall and exclaimed: "Judging from the sound, this armor is at least three to five meters thick. The outside is painted The black paint is used as camouflage. If the entire building is made of this kind of composite armor, how much will it cost? "Composite armor" Some information about composite armor suddenly appeared in Wang Hao's mind. Ordinary armor is made of a single material. of. For example, steel armor and aluminum alloy armor continue to increase as the penetration of anti-tank shells, missiles and rockets, and homogeneous armor cannot withstand attacks from such weapons. However, increasing the armor will inevitably increase the weight of the tank and affect the maneuverability of the tank. So, people came up with the idea of ??using multiple layers of armor made of different materials, which is composite armor. Due to the different materials used, there are many types of composite armor. Some are made of both internal and external metal materials; some are made of four or five layers of gold and non-metallic materials. Some composite armor has gaps between each layer, which is called multi-layer. Each layer of armor-piercing or armor-piercing bullets consumes a certain amount of energy. Due to the different hardness of each layer of material, the core of the armor-piercing projectile or the metal jet of the armor-piercing projectile can change direction, or even break the core of the armor-piercing projectile. Therefore, the anti-penetration ability of composite armor is twice that of homogeneous steel armor. When the unit area weight of the armor is the same, the anti-penetration ability of composite armor is twice that of homogeneous steel armor. "If there really is 8,000 tons of gold in this, it's worth it. What does a mere five-meter-thick composite armor mean to a country?" Wang Hao walked closer to the wall, and his true energy followed the wall detection, and he could feel The wall is at least five meters thick. "Is there any way?" Sun Jian hit the black wall with his fist, causing a heavy reverberation, but there was no sign of shaking. How powerful is Sun Jian's fist? His strength cannot shake the wall at all. , which shows how strong the composite armor wall is. "No, we don't have much explosives now. The reinforced concrete wall at the beginning has consumed a large part of our explosives. Of course, this is not the key. The key is that our current Explosives can't blow open this wall yet. If you want to blow this wall open, it will take a long time. Exploding involves mathematics, and our preparations are insufficient" "That is to say, it is not that it cannot be blown open, but that it cannot be blown open. Need time? "Wang Haoasked. An engineer who was cleaning tools said: "The blasting work of composite armor like this is very cumbersome and time-consuming. If we want to open a hole big enough for vehicles to enter, we have to drill hundreds of small holes in the wall and perform directional blasting." "In fact, our current explosives are enough. The key is that drilling hundreds of small holes in this poor composite armor is very time-consuming." "How long will it take?" "Our current tools are not enough. At least five are needed." More than hours, this is still a conservative estimate. " "Five hours" Wang Hao's brows suddenly frowned. Obviously, five hours is impossible. If it takes five hours to blast, then it will be difficult to move the gold and retreat. It will take at least more than three hours, which adds up to more than eight hours. This is simply unrealistic. Staying here for even one more minute is dangerous. Now, what they are facing is not an army, but an army. A country, and more importantly, the current "Monk" can no longer be hit. If the US military appears at one end and conducts an air blockade, and the Monk Corps does not retreat, the consequences will be disastrous. ¡°Boom¡¡± While Wang Hao was thinking, several violent explosions came from the distance. "What's wrong?" Wang Hao's face suddenly turned cold, and his eyes shot into the air like sharp swords. "Report to the general, two helicopters have been destroyed." A soldier wearing a headset ran out of a military vehicle and reported. Apparently, the police in a nearby city had discovered a situation here and sent two planes to investigate. "Is there any other way?" Wang Hao nodded and asked several blasting experts. "No, at least, there is no way to force entry, unless we find the key to this door" "Key?" Wang Hao's eyes suddenly lit up, and his eyes fell on the huge door. On the dark gate, there is a keyhole every two meters. This key is designed very cleverly. Even if you have four keys, it is impossible to enter without four people. Of course, another possibility is also ruled out. If there are one or two lock-picking masters, it is impossible to enter, unless four lock-picking masters are found at one time. However, in this world, four lock-picking masters are found at one time, and they are willing to Risking one's life to rob the heavily guarded national gold reserve is almost impossible. "Let me see." Suddenly, Wang Hao's cell phone rang with the young monk's childish voice. Wang Hao pointed the camera of his mobile phone at several keyholes and asked the young monk to observe carefully. Maybe, the young monk could find a way. "Holy shit, ***, this is still a lock from the 1980s, it has no high-tech content at all." After looking at it, the young monk immediately cursed, if it was an electronic lock or any other lock related to high-tech, He has every way to open it, but he has no way to open this purely physical lock. "Is it complicated?" Wang Hao asked. "How do I know if it's complicated or not? This is just an ordinary door lock. It doesn't even have a password. However, the size of the keyhole and the craftsmanship should be very precise. If you want to use true energy to open the lock, it's impossible. Hehe " the little monk said with a strange smile. "Why?" Wang Hao was stunned. His idea was pierced by the young monk. He wanted a few soldiers to use their true energy to open the lock. "Just from the keyhole, it can be seen that although this lock does not have electronic equipment or passwords, the manufacturing process of the lock is very precise. If there is even the slightest error, it will not be opened. Zhenqi is a kind of Qi. , no matter how good the control is, it is impossible to control the square rules of the key, so it is impossible to open it with zhenqi, unless you can wear four keys that are so precise that there is no error, or kidnap the four The person who holds the key, otherwise, hehe"